Mop



March '31, 1931. HERTZBERG 1,798,418

MOP

Filed Nov. 26. 1928 if I A TTORNE Y Patented Mar. 31, 1931 UNITED STATESHARRY HERTZBERG, F BROOKLYN, NEW YORK MOP Application filed November 26,1928. Serial No. 321,923.

This invention relates to improvements in mops and more particularly tothat type of such devices in which the mop swatchis carried by a sheathof fabric and is supported on a skeleton frame from which it may be removed for cleaning or other purposes.

It is a particular object of this invention to provide a mop frame whichis so attached to its holder that it may be easily and quickly detachedtherefrom.

It is another object of the invention to provide a mop holder androtatable frame which are in frictional engagement with each other tohold the mop stationary at different angles with its holder, and toarrest it in one fixed position.

It is a further object of the invention to provide a mop frame whichcomprises a fully closed loop for the support of the swatch so thatobjects may not be pressed in between the open space of the frame, becaught therein, and distort the swatch and also to permit a quickdetachment of the swatch from its frame. 7

With these and other objects in view which will become clearer as thedescription progresses, the invention consists in a novel combination ofparts and details of construction shown on the accompanying drawingswhich form a material part of this disclosure and which are finallypointed out in the appended claims. 7 V

In the drawings: Fig. 1 is a plan view of a mop embodying the invention.

Fig. 2, is a sectional side elevation on line 22 of Fig. 1.

Fig. 3, is a plan view of my mop frame from which the swatch is removed,showing the mop frame partly disconnected from its holder.

Fig. 4:, is an enlarged detail plan on line 44 of Fig. 2 showing theengagement of the curved frame ends with the holder bear- Fig. 5, is asectional elevation on line 55 of Fig. 4.

Fig. 6 is an enlarged face view of the end of 20a in the direction ofthe arrow of Fig. 3.

In the drawings, 10 is a helical coil of wire,

having an open wound portion 10a and a close wound portion 10?) ofsmaller diameter. The open wound portion 10a forms a threaded socket fora mop stick 13, the bottom of which leans against the first turn of 10?)which forms a stop therefor. The coil portion 10b holds two flat plates11 which lie against each other and have each a wide part 110 and anarrow part 11?). Integral with each plate, outside of coil asemicylindrical bearing portion 11a is formed thereon which extendstransversely to the coil axis to both sides thereof.

The bearing plates 11 are driven into coil 10?; by force so that thecoil is expanded by and the plates locked in the coil by the contractionof those of its turns which lie against 11?).

The resiliency of the coil-turns 106 permit however when force isexerted between the two semicylindrical bearing parts 11a some slightseparation thereof so that these parts may clamp an object between them.This mop holder forms the subject matter of my copending application forLetters Patent, entitled Holders for clusters and the like, filed May 8,1928, Ser. No. 275,985, and the present invention has for its object thecarrying forward of the same inventive concept, by providing novel meanswhich cooperate with the above mentioned holder.

The cylindrical bearing 11a holds at opposite ends rotatably mountedtherein the end portions 20a of a looped bar 20 which is pre ferablymade of spring steel, of a diameter to fit loosely into bearing 11a. Theloop formed. by bar 20 is of heart shape, its forward portion istriangular, rounded at its apex, the open side which is attachedtohearing 11a is bent inwardly towards the center of the triangle at20?), with a second bend forming the pivot end portions 20a which arecurved as illustrated by Fig. 4.

The mop swatch consists of mop threads 21 which are held together by atubular fabric binding 22, stitched at 2251 to form a sheath which isslipped over one pivot end 20a of the mop frame and all around the sameto the opposite end 20a covering the frame 20 completely. The resiliencyof the frame 20 permits ends 20a to be sprung so far apart that bearing11a may be placed between the two ends 20a as shown in Fig. 3 and to beinserted into that hearing. lVhile the diameter of rod 20 is slightlyless than the interior diameter of bearing 11a the curvature of pivots20a makes theextremepoint 20c whichis shaped'toiform a spur and middlepa t 20d lean tightly against the inner surface of bearing 11a, and asthe transverse distance between theseextreme pointsis slightly greaterthan the diameter of the bearing 11a the frame ends will, when rotated,drive the bearing plates 11 slightly apart. When spurs 200 enter theslot'llc between the hearing plates 11a these plates are partly releasedof their strain and will close so far together that they h old the mopframe in this position. until force is exerted by means of the leverageafforded by the frame loop to spread the bearing pl ates apart byrotating frame 20. At 11d the bearing plates 11a are provided withnotches which slightly engage the spurs 200 so that some force must beapplied to move pivots longitudinally out of bearing 11o. Generally itis desirable to bend the spurs Qtlcso that the f ame 20 is arrested tolie in the plane of the mop stick axis. but by bending pivots 20a in adiiferentplanc than that of frame 20 the latter may be arrested at anyother angle relative to the mop stick axis. The resiliency of the frame20 and the friction of curved pivots 20a against bearing walls 11ahold'the mop firmly connected to its holder atany angle with the mopstick axis.

This mop offers various advantages against similar devices which use aswatch of similar construction. Most of such devices have an open gap atsome place of 'the loop-frame which is bridged by the sheath. It is afrequent occurrence in the use of such mops that anarrow vertical rod,as for instance the leg of a heating radiator is caught in the gapbetween the ends of the mop frame andtlie sheath is loosened therebyfrom the frame. The present inventionprevents this occurrence but doesnot prevent the removal of the sheath from the mop frame for cleaning orrenewal. Another advantage gained by my inventionis the increasedstability inherent in a closed frame and particularly the feature thatthe mop frame and. sheath may be removed together from the holderwithout the use of tools, which permits to have several mops attachableto the same holder; one for instanceto be used with oil andthe otherwith water.

The frictional engagement of the curved pivots with the mop holderbearing, which partly produced by the spring action of the holder andpartly by the curvature and.resil iency-of the pivots, prevents the mopfrom swinging on its pivots when such swinging is not desired and thelocking action of the bearing jaws holds the mop firmly in the plane ofits handle, which is very desirable for storing and shipping. Inaddition to all these advantages the construction of the whole mop andframe is so simple that it may be manufactured and sold at a veryreasonable price.

ll hile I have described the preferred form of my invention it shall beunderstood that such modifications may be made in the arrangeinent ofparts and in the construction means on said plates to hold said framedetachably locked to said bearing.

2. A iop head comprising a handle engaging portion having a transversebearing thereon consisting of a pair of'oppositely curved plates forminga slot between their abutting edges parallel to the bearing axis, alooped mop supporting frame having opposed end portionsformingseparatepivots mounted insaid bearing and spurs on said pivotsadapted to enter the slot between said plates to arrest their rotationin said bearing and to hold said frame in fixed position.

3. A mop comprising a handle engaging portion having a transversebearing thereon, consisting of a pair of oppositely curved plates, alooped frame having integral opposed end portions spaced from each otherand adapted to enter said hearing from opposite ends, the loop of saidframe providing resilient means 'to hold said end portions within saidbearing and resilient means on said handle engaging portion to presssaid plates yiel'dingly against said end portions.

4;. A mop head comprising a handle engaging portion having a transversecylindrical bearing thereon, alooped mop supporting frame having opposedendportions rotatably mounted in said bearing, saidend portions beinglongitudinally slidable into and out ofsaid bearing and humps-on saidend portions pressing against the cylindrical inside of said bearincausing friction therewith torestrict movement of said end portions insaid bearing.

Signed at Brooklyn, in the county of Kings and State of New York, this17th day of November A. D. 1928. I

HARRY I-lER-TZBERG.

